<template>
  <div class="app">
    <router-view></router-view>
  </div>
</template>
<script>
export default {
 created () {
  //  let _url = process.env.VUE_APP_URL
  //  alert(_url)
 }
}
</script>

<style lang="less">
/* 
 less 使用
 1.安装 npm i less less-loader  -D
 2.使用 style lang="less"
 */
*{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
.app,
body,
html {
  height: 100%;
}
</style>
